Product Identification

Product Name

Benzocaine

Synonyms

Americaine
Ethyl 4-aminobenzoate
Ethyl aminobenzoate
Ethyl p-aminobenzenecarboxylate
Norcaine
Ora-jel

CAS

94-09-7

Formula

C9H11NO2

Molecular Weight

165.19

EINECS

202-303-5

RTECS

DG2450000

RTECS Class

Agricultural Chemical and Pesticide; Human Data; Primary Irritant

Merck

13,1087

Beilstein/Gmelin

638434

Beilstein Reference

4-14-00-01129

EC Class

sensitizing

Physical and Chemical Properties

Appearance

White powder.

Solubility in water

Insoluble

Melting Point

89 - 90

Boiling Point

311

Vapor Pressure

0.0006 (25 C)

Density

0.4 g/L

pKa/pKb

11.49 (pKb)

Partition Coefficient

2.49

Heat Of Vaporization

55.2 kJ/mol

Usage

Local anesthetic.

Refractive Index

1.5502

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation. May cause contact dermatitis.

Eyes

May cause eye irritation.

EC Risk Phrase

R 43

EC Safety Phrase

S 22 24/25

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Poison Class

4

Fire Fighting Measures

Flash Point

164

Autoignition

>450

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.

Stability and Reactivity

Incompatibilities

Oxidizing agents, reducing agents, acids, bases.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Transport Information

HS Code

2922 49 95